Best of 2015

The blog posts Hacker News loved most in 2015. 3,426 posts.

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212

Image diffing using CSS

Since the last post [http://franklinta.com/2014/09/08/computing-css-matrix3d-transforms/] on CSS was popular here is another simple CSS trick that I found useful in the past. Let’s say we want to find the difference between these two images: You can do this by simply inverting the colors and then stacking them…

221

High quality GIF with FFmpeg

About two years ago, I tried to improve the support of the GIF encoding in FFmpeg to make it at least decent. This notably led to the addition of the transparency mechanism in the GIF encoder. While this is not always optimal depending on your source, it is in the most common cases. Still, this was merely an attempt…